We share our early experiences with virtualization, then show you how Linux’s built-in enterprise grade virtualization curb stomps some commercial options. The discussion wraps up with examples of awesome hardware passthrough, and the major shift Linux has made possible.

PLUS: Chromebooks outsell Macs, the sad story of an important project fading away, the big choice facing Fedora & more!

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— Show Notes: —

Brought to you by: Linux Academy

Virtualization

• Eddie Asks

libvirt

Libvirt is collection of software that provides a convenient way to manage virtual machines and other virtualization functionality, such as storage and network interface management. These software pieces include a long term stable C API, a daemon (libvirtd), and a command line utility (virsh). A primary goal of libvirt is to provide a single way to manage multiple different virtualization providers/hypervisors, such as the KVM/QEMU, Xen, LXC, OpenVZ or VirtualBox hypervisors

Virtual Machine Manager Home

The virt-manager application is a desktop user interface for managing virtual machines through libvirt. It primarily targets KVM VMs, but also manages Xen and LXC (linux containers). It presents a summary view of running domains, their live performance & resource utilization statistics. Wizards enable the creation of new domains, and configuration & adjustment of a domain’s resource allocation & virtual hardware. An embedded VNC and SPICE client viewer presents a full graphical console to the guest domain.

Boxes – GNOME Wiki!

UEFI in Virutal Machines, Meet OVMF

OVMF is an EDK II based project to enable UEFI support for Virtual Machines. OVMF contains a sample UEFI firmware for QEMU and KVM.

Using CPU host-passthrough with virt-manager

Since host-passthrough is the only reliably way to expose the full capabilities of the host CPU to the VM, users regularly want to enable it.

• Qemu OVMF PCI Passthrough stopped booting after most recent update / Applications & Desktop Environments

unraid – Virtualization Host

• 7 Gamers, 1 CPU – Ultimate Virtualized Gaming Build Log – YouTube

In our case, we created 7 discrete gaming systems capable of running concurrently and completely independently of each other – all running in a single tower.

• 8 (or is it 10?) Gamers, 1 CPU – Taking it to the Next Level! – YouTube

Another $30,000 worth of computer hardware.. But can it power TEN gaming rigs this time??

Proxmox – Powerful Open Source Server Solutions

• Storage: ZFS – Proxmox

How To

Server

• yum install kvm qemu-kvm python-virtinst libvirt libvirt-python virt-manager libguestfs-tools

• chkconfig libvirtd on

• service libvirtd start

• yum install bridge-utils

• Open Virt-Manager > click + > Bridge > br0 > Start Mode: onboot > Activate Now > Check eth0

Client

• Install virt-manager

— PICKS —

Runs Linux

The NVIDIA DGX-1 Deep Learning System, Runs Linux

• GTC 2016 NVIDIA DGX 1, World’s First Deep Learning Supercomputer part 7 – YouTube

Desktop App Pick

Netdata – Real-Time Performance Monitoring

netdata is a highly optimized Linux daemon providing real-time performance monitoring for Linux systems, Applications, SNMP devices, over the web !

• nethogs: Linux ‘net top’ tool

NetHogs is a small ‘net top’ tool. Instead of breaking the traffic down per protocol or per subnet, like most tools do, it groups bandwidth by process.

Spotlight

systemd GUI: systemd-manager

This application exists to allow the user to manage their systemd services via a GTK3 GUI. Not only are you able to make changes to the enablement and running status of each of the units, but you will also be able to view and modify their unit files, check the journal logs. In addition, systemd analyze support is available to display the time it takes for systemd to boot the system.

Patrons watch the full live version of LAS

• LAS 418 FULL LIVE STREAM

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— NEWS —

Chromebooks outsold Macs for the first time in the US

Google’s low-cost Chromebooks outsold Apple’s range of Macs for the first time in the US recently. While IDC doesn’t typically break out Windows vs. Chromebook sales, IDC analyst Linn Huang confirmed the milestone to The Verge. “Chrome OS overtook Mac OS in the US in terms of shipments for the first time in 1Q16,” says Huang. “Chromebooks are still largely a US K-12 story.”

• lykwydchykyn comments echo Chris’ thoughts perfectly

Fedora just missed rebasing on the goodness that is Linux 4.6

• Fedora 24 ships June 14, 2016

And because of that, it looks like Linux kernel 4.6 will not be the default for the Fedora 24 operating system, which will ship in less than a month, on June 14, 2016, with the latest maintenance release of the Linux 4.5 kernel series. However, the chances are that Linux kernel 4.6 will be shortly released to the stable channels for users to upgrade their current kernel after Fedora 24’s official release.

Linux kernel 4.6 was announced by Linus Torvalds on May 15, 2016. It promises to offer users a new distributed file system, OrangeFS, support for the USB 3.1 SuperSpeed Plus (SSP) protocol, Out Of Memory task killer reliability improvements, support for Intel Memory protection keys, the Kernel Connection Multiplexor, as well as 802.1AE MAC-level encryption (MACsec) support.

Moreover, Linux kernel 4.6 ships with support for the BATMAN V protocol, an online inode checker for the OCFS2 file system, dma-buf, support for cgroup namespaces, and support for the pNFS SCSI layout. The first GNU/Linux distributions to adopt the Linux 4.6 kernel branch are Gentoo, Arch Linux, and SparkyLinux, and openSUSE Tumbleweed should join them in the coming weeks.

lm-sensors project dead?

It’s been a year since the last LM-Sensors release and the project isn’t as vibrant or active as it once was while the project site has been down for a while now and it doesn’t appear to be coming back.

Mattermost continues to bring the heat to Slack

Mattermost 3.0 offers a long awaited features: multi-team accounts, Japanese language translation, and full width display, plus upgrades to apps for iOS, Android, Windows, Linux and Mac, emojis, and we have new integrations for Outlook, Ruby & Rust.

Introducing Mycroft Core – Mycroft

We are pleased to announce that Mycroft Core 0.6 Alpha is available for download today. Mycroft Core is a lightweight, portable piece of software written in Python. You can run it on anything from a Raspberry Pi to a gaming rig.

Mail Bag

• https://slexy.org/view/s26VoSpJhR

• Why screen lockers on X11 cannot be secure – Martin’s Blog

• Circumventing Ubuntu Snap confinement
• xorg – Why is X11 a security risk in servers? – Ask Ubuntu
• X11 is horribly insecure, each subuser should get its own X11 server in a container. · Issue #31 · subuser-security/subuser · GitHub

• The Wayland Situation: Facts About X vs. Wayland – Phoronix

• https://slexy.org/view/s2kxsRnQk5

Call Box

• Chris’ call out for the community to help him with his background

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